Casement-window lock and joint-strip.



T l iii CASEMENT-WINDOW 00K AND JOINT-STRIP.

To all whom it may concern:

Be it known that 1, ANDREW G. VVAss, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Casementcapable of securing the same, not only in closed positions but also in various different more or less opened positions. Efficient locks for this purpose, as hitherto provided, have been very complicated and expensive. Furthermore, it is a well known fact that it is very diflicult to make tight joint strips, such as will exclude water and air, between the lower edge of the sash and the window stool.

My invention provides an extremely simple and highly ei'iicient combined lock and joint strip. lhe pref-erred form of this improved device is illustrated in the accompanying drawings, wherein like characters indicate like parts throughout the several views.

Referring to the drawings,

Figure 1. is a fragmentary view in side elevation showing my invention as applied to a casement window, the said parts being viewed from the inside of a building;

2 is a horizontal section taken on the line m of Fig. 1;

Fig. 3 is a vertical section taken on the line 00 m of Fig. 1;

Fig. 1 is a horizontal section takenon the line a w* of Fig. 3; and

Fig. 5 is an edge elevation showing the lower portion of the easement sash.

The numeral 1 indicates the framework of a casement window, the same having, in the outer portion of its stool 2, a rabbet 3 that affords a stop shoulder that is preferably faced with a metal strip 4: set slightly oblique in respect to vertically.

Specification of Letters Patent; Patented Feb. 20!, 191'?- Application filed March 20, 1916. SeriaI No. 85,230.

The casement sash 5, as is usual, is hung on hinges 6 for horizontal swinging move ment and it is arranged to seat against upright stop strips 7 on the sides of the frame 1. The lower portion of this sash is formed with a deep narrow groove 8 that extends from side to side of the sash and opens at the bottom of the sash. A fiat metal blade 9 that affords both a lock anda joint strip I? and extends from one side to the other of said sash, works through the lower portion of the slot 8 and directly between metal guide strips 10 that are countersunk into the bottom of the sash and extended slightly up the side edges of the sash. At its central portion, this look strip 9 is rigidly secured to a vertically movable plate 12 that has dove-tailed engagement with a metallic guide channel 13 set into the sash and 'Z rigidly secured thereto by screws or other suitable devices. The plate 12 holds the lock strip 9 always horizontal but free for vertical movement. 1

The numeral 1-1 indicates a tumbler or stud shaft mounted to rotate in a bearing sleeve 15 set into the sash and provided, at is outer portion, with a flange that is sesured to the sash by screws 16 or other suit able means. A screw 17, applied to the outer the shaft l i is provided with an operating knob 19 and, at its inner end, it is provided with an eccentric stud or crank pin 20 that engages a horizontal slot 21 in the vertically movable plate 12.

Secured in a suitable position on the stool 2, is a latch bar 22 provided, as shown, with slots or depressions 23 and 24.

Vith the device described, the sash. can be freely swung to and from a closed position when the lock strip 9 is raised. When the sash is swung to a closed position, the strip or blade 9 may be lowered by rotation of the knob 19 and shaft 1%, and when it is thus lowered against the metal faced look shoulder 4 of the window-stool, the window will be securely locked in such closed position and a very close and tight joint will be formed between the sash and stool such as. required to exclude rain and air. Further more, when the said combined lock and joint strip 9 is lowered, the crank pin 20 will be thrown to its lowermost or dead center posi s i tion, sojthat no amount of force applied to the said strip 9 will serve to raise the same.

' n; sash is, therefore, then securely locked 'and made burglar-proof.

ablestrip or blade 9, therefore, performs "several important functions, to wit: that of a joint strip, that of alock for securing the sash in a closed position, and that of a device for securing the window in different open positions. I

' The device, furthermore, isrof such nature that itmay be very easily applied to casement window's already erected. vOf course,

itmay be also applied to so-called French doors and to both vertically and horizontallypivoted window sashes. In fact, in this specification and in the claim, the term oasement window is used in a broad sense to include all swinging window sashes or doors.

\Vhat I claim is The combination with a window sash having a slot in the lower rail thereof and a transverse recess communicating with said slot, of a channel-plate guide located within the recess in said rail and having its channel opening into the slot, a combined lock and joint strip movable in said slot, a sliding plate extending from said strip and operable in the channel of said guide plate, and an operating shaft extending into the aforementioned rail and having a cam connection with the sliding plate and having, also,

its inner end extending through the channel of said channel-plate guide and into said plate.

In testimony whereof I ailix my signature in presence of two witnesses.

ANDREW Gr. 'WASS. VVitness-es CLARA DEMAREST, FRANK D. MERCHANT.

2 Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, .D. 0. 

